Three‐dimensional nanoarchitectures (see Figure) are formed by the oriented aggregation of CuO nanoparticles. One‐dimensional orientation in the early stages of aggregation (in the [001] plane) of CuO nanoparticles is followed by formation of single‐crystalline nanostructures consisting of hundreds of oriented nanoparticles.

High‐temperature nonhydrolytic aminolysis has been developed as an approach to monodisperse titania nanocrystals by exploiting the chemical modification of reactive titanium isopropoxide with oleic acid as the chelating ligand. Its capabilities for the anisotropic growth of highly crystalline anatase titania nanocrystals (see picture) with controlled size and shape have been demonstrated.

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Following an inspiration from Vogrin et al. (J. Membr. Sci. 2002, 207, 139), we have investigated the thickness dependence of macrovoid evolution during the phase inversion of asymmetric flat membranes and observed, for the first time, a critical structure-transition thickness, L c, which indicates a transition of the membrane morphology from a spongelike to a fingerlike structure with an increase in membrane thickness. Below L c, the membranes show a fully spongelike cross-sectional structure, whereas above L c, the membranes exhibit a mainly fingerlike macrovoid structure. Two binary solutions are employed in this study:  20 wt % polyethersulfone/N-methyl-2-pyrrolidone (NMP) and 20 wt % BTDA−MDI/TDI co-polyimide/NMP solutions. Their corresponding critical thicknesses, L c, are 1.5 ± 0.4 and 11 ± 2 μm, respectively.